I'm finding that the bug with SSAS properties on Windows 8.1 (http://support.microsoft.com/kb/2889492), which was fixed in SQL Server 2012 SP1 CU7, isn't fixed in SQL Server 2012 SP2.
The Release notes for 2012 SP2 say it should have all fixes up to SP1 CU9, so should be in there, but this KB Reference doesn't appear in there.
2012 SP2 Release Notes - http://support.microsoft.com/KB/2958429
I've worked round this by using SQL Server 2014 Management studio, but that should be in there...
Cheers
Nick